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Public Sub FireRequestProcessed(ByVal theRequest As String, _ ByVal theSequenceNumber As Integer, ByVal theDuration As Integer, _ ByVal theResponse As String) RaiseEvent OnRequestProcessed(theRequest, theSequenceNumber, theDuration, theResponse) End Sub Public Event OnIdle() Public Sub FireIdle() RaiseEvent OnIdle() End Sub End Class Listing 12-33 and Listing 12-34 show C# and VB .NET implementations of RequestProcessor. Listing 12-33. The C# Implementation of RequestProcessor public class RequestProcessor { Socket socket; HttpRequest httpRequest; public RequestProcessor(Socket theSocket, HttpRequest theHttpRequest) { socket = theSocket; httpRequest = theHttpRequest; } public void HandleRequest() { DateTime startTime = DateTime.Now; FireIdle(); // simulate processing time TimeSpan duration = DateTime.Now.Subtract(startTime); SendResponse((int) duration.TotalMilliseconds); } private void SendResponse(int theProcessingTime) { IPEndPoint endPoint = socket.RemoteEndPoint as IPEndPoint; string body = string.Format("Response {0}", DateTime.Now.ToString("ffffff")); string header = string.Format("HTTP/1.1 200 OK\r\n" + "Sequence-Number: {0}\r\n" + "Content-Length: {1}\r\n", httpRequest.SequenceNumber, body.Length); string message = string.Format("{0}\r\n{1}", header, body); byte[] bytes = Encoding.UTF8.GetBytes(message); NetworkStream stream = new NetworkStream(socket); stream.Write(bytes, 0, bytes.Length);

Although the SPFILE is placed in the $ORACLE_HOME/dbs directory by default, you can place it anywhere as long as you specify the location in an initialization parameter file by using the SPFILE parameter.

The V$SPPARAMETER dynamic view is comparable to the V$PARAMETER view and is used to record all the initialization parameter names and their values when using the SPFILE rather than the init.ora file.

Oracle lets you use the traditional init.ora file (or PFILE) as the configuration file. However, Oracle also recommends that you create and use an SPFILE for all databases. You can create the SPFILE from the init.ora file, and the process is very simple. You must first log in as a user with SYSDBA or SYSOPER privileges. Then run the following command, in which PFILE is the init.ora file for our new nina database (initnina.ora): SQL> CREATE spfile FROM pfile = '/u03/app/oracle/dbs/initnina.ora'; File created. SQL>

string requestBody = Encoding.UTF8.GetString(httpRequest.Body); FireRequestProcessed(requestBody, httpRequest.SequenceNumber, theProcessingTime, body); } public delegate void RequestProcessedHandler( string theRequest, int theSequenceNumber, int theDuration, string theResponse); public event RequestProcessedHandler OnRequestProcessed; public void FireRequestProcessed(string theRequest, int theSequenceNumber, int theDuration, string theResponse) { if (OnRequestProcessed == null) return; OnRequestProcessed(theRequest, theSequenceNumber, theDuration, theResponse); } public delegate void IdleHandler(); public event IdleHandler OnIdle; public void FireIdle() { if (OnIdle != null) OnIdle(); } } Listing 12-34. The VB .NET Implementation of RequestProcessor Public Class RequestProcessor Private _socket As Socket Private _httpRequest As HttpRequest Public Sub New(ByVal theSocket As Socket, ByVal theHttpRequest As HttpRequest) _socket = theSocket _httpRequest = theHttpRequest End Sub Public Sub HandleRequest() Dim startTime As DateTime = DateTime.Now FireIdle() ' simulate processing time Dim duration As TimeSpan = DateTime.Now.Subtract(startTime) SendResponse(CInt(duration.TotalMilliseconds)) End Sub Private Sub SendResponse(ByVal theProcessingTime As Integer) Dim endPoint As IPEndPoint = DirectCast(_socket.RemoteEndPoint, IPEndPoint)

Once you create the SPFILE, a subsequent request to create it from the init.ora file will overwrite the existing SPFILE.

The previous command will create the SPFILE in the default location ($ORACLE_HOME/dbs). The file will be named spfilenina.ora. You can also create an SPFILE by giving it an explicit name, as shown in the following example: SQL> CREATE spfile = '/u03/app/oracle/dbs/nina_spfile.ora' FROM pfile = '/u03/app/oracle/dbs/initnina.ora'; If you want Oracle to create an SPFILE from your init.ora file, and both files are located in their default locations ($ORACLE_HOME/dbs), you can simply issue the following command: SQL> CREATE spfile FROM pfile; File created. SQL>